___ is the most useful invention?
#32091
A
Do you think which of these
B
Which of these you know
C
Which of these do you know
D
You know which of these
推荐题目
She was so angry that she rushed out into the rain ______ I could stop her.
#31745
A
when
B
until
C
before
D
after
_____ you keep on working hard, I don’t mind whether you get good marks in your class.
#80479
A
As long as
B
As soon as
C
As well as
D
as far as
__________ you understand the rule, you will have no further difficulty.
#80323
A
While
B
Once
C
Though
D
Unless
Lucy will keep her word and carry on with the project _______ it means losing a lot of money.
#30699
A
so that
B
as though
C
now that
D
even if